To repeat, there is one more thing Intel doesn't have. Nvidia has it built into the GPU now, even the lowly 9300M G, if I read correctly.
PhysX.
Beyond games, what if your MacBook was a nice little high-powered Physics simulator? I mean, it ain't gonna process Hadron collider data or anything, but PhysX acceleration is rather impressive.
Intel has Havok but it is not accelerated in the X4500 GPU, AFAIK...
PhysX driver support for Windows should be here around now...
http://blog.laptopmag.com/nvidia-unv...-support-by-q3
I'm going to find and watch pretty PhysX demo videos.

Because if the MacBook can do that, at least initially in BootCamp, I am going to say, OMFG. Remember though, for Windows BootCamp, you have to find the latest drivers yourself and tinker with it a little, as laptop drivers are usually provided through the manufacturer which will choose previous versions which may be more stable, who may not update them as much.
So. The big question is now back to Apple. What is OpenCL? Will PhysX ever be used in OpenCL or OpenPhysics or something like that?
Could the GPU really be as powerful as the CPU? HD, H.264 Decode/Encode, Physics simulations, other great apps..?
If within 10.5.5+ or 10.6 you could access PhysX, and write a really amazing K-12+University physics education program/platform, that would be darn cool.
Nice PhysX game demo:
http://www.youtube.com/watch?v=tFzcBbdQEh4